1 files changed, 17 insertions, 2 deletions
diff --git a/chromium/media/gpu/windows/d3d11_texture_wrapper.h b/chromium/media/gpu/windows/d3d11_texture_wrapper.h
index 88171c16a82..4d8c95e6ecd 100644
--- a/chromium/media/gpu/windows/d3d11_texture_wrapper.h
+++ b/chromium/media/gpu/windows/d3d11_texture_wrapper.h
@@ -51,6 +51,14 @@ class MEDIA_GPU_EXPORT Texture2DWrapper {
       ComD3D11Texture2D texture,
       size_t array_size) = 0;
 
+  // If the |texture| has key mutex, it is important to acquire the key mutex
+  // before any usage or you'll get an error. This API is required to be called:
+  // - Before reading or writing to the texture via views on the texture or
+  // other means.
+  // - Before calling ProcessTexture.
+  // And need to call ProcessTexture() to release the key mutex.
+  virtual Status AcquireKeyedMutexIfNeeded() = 0;
+
   // Import |texture|, |array_slice| and return the mailbox(es) that can be
   // used to refer to it.
   virtual Status ProcessTexture(const gfx::ColorSpace& input_color_space,
@@ -82,6 +90,8 @@ class MEDIA_GPU_EXPORT DefaultTexture2DWrapper : public Texture2DWrapper {
               ComD3D11Texture2D in_texture,
               size_t array_slice) override;
 
+  Status AcquireKeyedMutexIfNeeded() override;
+
   Status ProcessTexture(const gfx::ColorSpace& input_color_space,
                         MailboxHolderArray* mailbox_dest,
                         gfx::ColorSpace* output_color_space) override;
@@ -104,6 +114,10 @@ class MEDIA_GPU_EXPORT DefaultTexture2DWrapper : public Texture2DWrapper {
                  DXGI_FORMAT dxgi_format,
                  ComD3D11Texture2D texture,
                  size_t array_slice);
+
+    GpuResources(const GpuResources&) = delete;
+    GpuResources& operator=(const GpuResources&) = delete;
+
     ~GpuResources();
 
    private:
@@ -111,8 +125,6 @@ class MEDIA_GPU_EXPORT DefaultTexture2DWrapper : public Texture2DWrapper {
 
     std::vector<std::unique_ptr<gpu::SharedImageRepresentationFactoryRef>>
         shared_images_;
-
-    DISALLOW_COPY_AND_ASSIGN(GpuResources);
   };
 
   // Receive an error from |gpu_resources_| and store it in |received_error_|.
@@ -126,6 +138,9 @@ class MEDIA_GPU_EXPORT DefaultTexture2DWrapper : public Texture2DWrapper {
   MailboxHolderArray mailbox_holders_;
   DXGI_FORMAT dxgi_format_;
 
+  Microsoft::WRL::ComPtr<IDXGIKeyedMutex> keyed_mutex_;
+  bool keyed_mutex_acquired_ = false;
+
   base::WeakPtrFactory<DefaultTexture2DWrapper> weak_factory_{this};
 };